Mortar-mixer.



P. LI` BLYSTONE.

MORTAB MIXER.

APPLIOATIOH Hmm un. 11, 1909.

925,744. Patented June 22, 1909.

mumtoz "lfvammwy y j rEERY L. BLYsToN'E, or CAMBRIDGE SPRINGS,PENNSYLVANIA.

MoRTAE-M'IXER.

Specification of Letters Patent.

Patented June 22, 1909.

Application filed March 11, 1909. Serial No. 482,747.

To all whom 'it may concern:

Be it known that I, PERRY L. BLYsToNE, a citizen of the United States,residing at Cambridge Springs, in the county of Crawford and State ofPennsylvania, have invented certain new and useful Improvements inMortar-Mixers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

This invention relates to machines for mixing mortar, concrete and othersimilar substances; and it consists in the novel construction andcombination of the parts hereinafter fully described and claimed.

In the drawings, Figure l is a plan view of the mixer. Fig. Zs across-section, taken on the line -a2 in Fig. l.

A is a supporting frame of any approved construction.

B is a mixing trough or vessel mounted in the frame A on trunnions Z).This trough is provided with mechanism for tilting it over to empty outits contents, and for holding it stationary while the machine is atwork. This tilting mechanism is not shown in the drawings, as it is ofany approved construction.

C is a driving shaft mounted to revolve in the trough and journaled inbearings c, or in any other suitable bearings, and provided with adriving wheel c or other suitable driving devices for revolving it.

D are arms secured to the shaft C and arranged radially at suitabledistances apart in the form of a spiral. The arms D are adjustable bothlongitudinally and circumferentially on the shaft, and they are providedwith serews (l or other approved locking-devices for securing them inposition. The screws l are setscrews which are screwed into the hubportions of the arms, and which engage with the shaft.

E are blades secured to the outer end portions of the arms D andarranged step by step upon a regular spiral curve.

F are arms similar to the arms D. These arms F are secured to the shaftC by screws f, and they are provided with blades G at their outer endportions. The arms F are arranged alternately of the arms D, and in theform of a spiral which turns in the opposite direction from theaforesaid spiral, and the blades G are inclined in the oppositedirection from the blades E with reference to the axis of the shaft.rIhe spiral formed by one series of blades is similar to a right-handscrewthread of large pitch, and the spiral formed by the other series ofblades is similar to a left-hand screwthread.

D is an end arm for the series of arms D, and it is provided with ascraper-blade E which works against one end of the trough and which islarger than the blades IG.

F is an end arm for the series of arms F, and it is provided with alarge scraper-blade G which works against the other end of the trough.

The end arms D and F project in diametrically opposite directions, andthe series of arms D and F project from around the shaft., one seriesprojecting from one half of its periphery and the other series from itsother half.

The shaft is driven in the direction of the arrow 2, so that thematerialI in the trough is moved in the direction of the arrows 3 by theblades D and D, and in the direction of the arrows et by the blades Gand Gr. This movement back and forth of the material in dilferentdirections at different parts of its mass results in avery thoroughmixture of the contents of the trough, and the trough is emptied bytilting it over as often as desired.

IVhat I claim is:

l. In a mixer, the combination, with a mixing vessel, and a singledriving shaft journaled therein; of two radial arms which project atdiametrically opposite points from the shaft adjacent to the ends of thevessel, said end arms being provided with end blades inclined inopposite directions to the axis of the shaft, a series of radial armsscoured around one-half of the periphery of the shaft between the saidend arms and provided with blades arranged step by step on a curve ofone direction and at an angle corresponding to one end blade, and asecond series of radial arms secured around the other half of theperiphery of the shaft alternately of the aforesaid arms and providedwith blades ar 'anged step by step on a` cuive of the reverse directionto the aforesaid curve and at an angle corresponding to the other endblade.

2. In a. mixer, the combination, with a mixing vessel, and a drivingshaft journaled therein; of two radial end arms which pro` ject atdiametrically opposite points from the shaft, said end arms beingprovided with said arms and provided With blades arranged step by stepon a curve of the reverse direction from the aforesaid curve and at anangle corresponding to the other scraperblade.

In testimony whereof I have atlixed my signature in the presence of twoWitnesses.'

PERRY L. BLYSTONE.

lVitnesses J. A. Bonnin), A. H. DRAKE.

